A glass ceiling on the verge of shattering this morning. Sarah thomas, a mother of three from mississippi, on track to become the first permanent, female nfl official. She's on the field right now, with new orleans saints, as they go through training camp. Honing skills as she awaits word that her dreams will finally come true. In the bold black and white stripes, hair tucked under that black hat, this official looks like every other one on the field. Watch yourself here, 17. Little tight. Reporter: But 39-year-old sarah thomas, a married mother of three, is on the verge of history. I'm a tomboy. But I'm married with two boys. Reporter: Poised to become the first-ever full-time female official for the national football league. There's momma. 72, you have come on this. Put your guard up. Individually, I'm a female. There's a lot of things that set us apart. Race, gender. But collectively, we're out there for the same goal. Reporter: For 16 years of officiating grade school, high school and college games, she was spotted by a scout. I have an official you need to look at. He said, what's his name? He said, her name is sarah? Yeah. She's a she. Reporter: And she's 1 of 21 finalists in the nfl's officiating development program. I hope so. Not going to break it all up. Reporter: The top contender for the next slot to open, waiting for her chance to shatter that glass ceiling. I could not do this without the support of my husband and my kids. So, this is just what I do.

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